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package bigqueue
import (
"fmt"
"strconv"
"sync"
"testing"
"time"
. "github.com/smartystreets/goconvey/convey"
)
// TestFileQueue_OpenError to test Open function which without required parameters.
func TestFileQueue_OpenError(t *testing.T) {
Convey("TestFileQueue_OpenError", t, func() {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("Open with empty path and name", func() {
var queue = &FileQueue{}
//var queue = new(FileQueue)
err := queue.Open("", "", nil)
So(err, ShouldNotBeNil)
So(err, ShouldBeError, "parameter 'dir' can not be blank")
defer queue.Close()
defer clearFiles(path, "testqueue")
})
Convey("Open with empty name", func() {
var queue = &FileQueue{}
err := queue.Open(path, "", nil)
So(err, ShouldNotBeNil)
So(err, ShouldBeError, "parameter 'queueName' can not be blank")
defer queue.Close()
})
})
}
// TestFileQueue_Open to test open file without any error and check the initial size
func TestFileQueue_Open(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_Open", t, func() {
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
if err != nil {
t.Error(err)
}
defer queue.Close()
defer clearFiles(path, "testqueue")
sz := queue.Size()
SoMsg(fmt.Sprintf("Init queue size must be zero, but now is %d", sz), sz, ShouldEqual, 0)
empty := queue.IsEmpty()
SoMsg("Init queue must be empty, but now is not empty", empty, ShouldBeTrue)
})
}
// TestFileQueue_Open to test open file without any error and check the initial size
func TestFileQueue_OpenTwice(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_OpenTwice", t, func() {
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
defer queue.Close()
defer clearFiles(path, "testqueue")
// open again will return error
Convey("Already open", func() {
err = queue.Open(path, "testqueue", nil)
So(err, ShouldNotBeNil)
So(err, ShouldBeError, "FileQueue already opened")
})
sz := queue.Size()
SoMsg(fmt.Sprintf("Init queue size must be zero, but now is %d", sz), sz, ShouldEqual, 0)
empty := queue.IsEmpty()
SoMsg("Init queue must be empty, but now is not empty", empty, ShouldBeTrue)
})
}
// TestFileQueue_Enqueue to test enqueue function
func TestFileQueue_Enqueue(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
var queue = new(FileQueue)
Convey("TestFileQueue_Enqueue", t, func() {
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
enqueue(queue, []byte("hello xiemalin中文"), 10, t)
})
defer queue.Close()
defer clearFiles(path, "testqueue")
}
// TestFileQueue_DequeueEmpty to test dequeue item from an empty queue
func TestFileQueue_DequeueEmpty(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_DequeueEmpty", t, func() {
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
dequeueEmpty(queue, t)
defer queue.Close()
})
}
// TestFileQueue_EnqueueDequeue to test enqueue and dequeue
func TestFileQueue_EnqueueDequeue(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_EnqueueDequeue", t, func() {
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
defer queue.Close()
enqueue(queue, []byte("hello xiemalin中文"), 10, t)
dequeue(queue, []byte("hello xiemalin中文"), 10, t)
// to check there are no message avaiable
dequeueEmpty(queue, t)
})
}
// TestFileQueue_Skip to test skip function
func TestFileQueue_Skip(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_EnqueueDequeue", t, func() {
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
defer queue.Close()
enqueue(queue, []byte("hello xiemalin中文"), 10, t)
queue.Skip(5)
dequeue(queue, []byte("hello xiemalin中文"), 5, t)
// to check there are no message avaiable
dequeueEmpty(queue, t)
})
}
// TestFileQueue_Peek to test peek item function
func TestFileQueue_Peek(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_EnqueueDequeue", t, func() {
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
defer queue.Close()
// peek to an empty queue
index, bb, err := queue.Peek()
So(err, ShouldBeNil)
SoMsg(fmt.Sprintf("Error peek to an empty queue should return index of '-1', but actually is %d", index), index, ShouldEqual, -1)
So(bb, ShouldBeNil)
enqueue(queue, []byte("hello xiemalin中文"), 10, t)
index, bb, err = queue.Peek()
index2, bb2, err2 := queue.Peek()
So(index, ShouldEqual, index2)
So(bb, ShouldResemble, bb2)
So(err, ShouldResemble, err2)
})
}
// TestFileQueue_Gc to test gc func after enqueue and dequeue process
func TestFileQueue_Gc(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_Gc", t, func() {
var queue = new(FileQueue)
// use custom options
var options = &Options{
DataPageSize: 128,
IndexItemsPerPage: 17,
}
err := queue.Open(path, "testqueue", options)
So(err, ShouldBeNil)
defer queue.Close()
enqueue(queue, []byte("hello xiemalin中文"), 500, t)
dequeue(queue, []byte("hello xiemalin中文"), 500, t)
queue.Gc()
})
}
// TestFileQueue_AutoGc to test automatic gc function while on enqueue and dequeue process
func TestFileQueue_AutoGc(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_Gc", t, func() {
var queue = new(FileQueue)
// use custom options
var options = &Options{
DataPageSize: 128,
IndexItemsPerPage: 17,
AutoGCBySeconds: 1,
}
err := queue.Open(path, "testqueue", options)
So(err, ShouldBeNil)
defer queue.Close()
doEnqueue(queue, []byte("hello xiemalin中文"), 500, t)
dequeue(queue, []byte("hello xiemalin中文"), 500, t)
time.Sleep(2 * time.Second)
})
}
// TestFileQueue_Subscribe to test subscribe function
func TestFileQueue_Subscribe(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_Subscribe", t, func() {
i := 0
var queue = new(FileQueue)
err := queue.Subscribe(func(index int64, bb []byte, err error) {
i++
})
// here should err
So(err, ShouldBeError, ErrSubscribeFailedNoOpenErr)
err = queue.Open(path, "testqueue", nil)
queue.Subscribe(func(index int64, bb []byte, err error) {
i++
})
So(err, ShouldBeNil)
defer queue.Close()
sz := 10
doEnqueue(queue, []byte("hello xiemalin中文"), sz, t)
time.Sleep(time.Duration(2) * time.Second)
So(i, ShouldEqual, sz)
queue.FreeSubscribe()
})
}
// TestFileQueue_FreeSubscribe to test free subscribe function
func TestFileQueue_FreeSubscribe(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_FreeSubscribe", t, func() {
i := 0
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
queue.Subscribe(func(index int64, bb []byte, err error) {
i++
})
So(err, ShouldBeNil)
defer queue.Close()
queue.FreeSubscribe()
sz := 10
// no longer receive subscrbie callback
enqueue(queue, []byte("hello xiemalin中文"), sz, t)
SoMsg(fmt.Sprintf("subscribe count should be 0, but actually is %d", i), i, ShouldEqual, 0)
})
}
// TestFileQueue_FreeSubscribe_MidCycle to test free subscribe function in the middle of cycle
func TestFileQueue_FreeSubscribe_MidCycle(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_FreeSubscribe_MidCycle", t, func() {
i := 0
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
var wg sync.WaitGroup
wg.Add(5)
queue.Subscribe(func(index int64, bb []byte, err error) {
defer wg.Done()
i++
if i == 5 {
queue.FreeSubscribe()
}
})
if err != nil {
fmt.Println(err)
}
defer queue.Close()
sz := 10
doEnqueue(queue, []byte("hello xiemalin中文"), sz, t)
wg.Wait()
So(queue.Size(), ShouldBeLessThanOrEqualTo, 5)
})
}
// TestFileQueue_PeekAll
func TestFileQueue_PeekAll(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
Convey("TestFileQueue_Subscribe", t, func() {
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
defer queue.Close()
sz := 10
// no longer receive subscrbie callback
enqueue(queue, []byte("hello xiemalin中文"), sz, t)
r, indexs, err := queue.PeekAll()
So(err, ShouldBeNil)
So(len(r), ShouldEqual, 10)
So(len(indexs), ShouldEqual, 10)
})
}
// TestFileQueue_Status
func TestFileQueue_Status(t *testing.T) {
Convey("Test empty queue status result", t, func() {
path := Tempfile()
clearFiles(path, "testqueue")
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
defer queue.Close()
defer clearFiles(path, "testqueue")
qFileStatus := queue.Status()
So(qFileStatus, ShouldNotBeNil)
So(qFileStatus.FrontIndex, ShouldEqual, 0)
So(qFileStatus.HeadIndex, ShouldEqual, 0)
So(qFileStatus.TailIndex, ShouldEqual, 0)
So(qFileStatus.HeadDataPageIndex, ShouldEqual, 0)
So(qFileStatus.HeadDataItemOffset, ShouldEqual, 0)
So(len(qFileStatus.IndexFileList), ShouldEqual, 1)
So(len(qFileStatus.DataFileList), ShouldEqual, 0)
So(qFileStatus.MetaFileInfo, ShouldNotBeNil)
So(qFileStatus.FrontFileInfo, ShouldNotBeNil)
})
Convey("Test non-empty queue status result", t, func() {
path := Tempfile()
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
if err != nil {
t.Error(err)
}
defer queue.Close()
defer clearFiles(path, "testqueue")
data := []byte("hello xmatthew")
dataLen := len(data)
queue.Enqueue(data)
queue.Dequeue()
qFileStatus := queue.Status()
So(qFileStatus, ShouldNotBeNil)
So(qFileStatus.FrontIndex, ShouldEqual, 1)
So(qFileStatus.HeadIndex, ShouldEqual, 1)
So(qFileStatus.TailIndex, ShouldEqual, 0)
So(qFileStatus.HeadDataPageIndex, ShouldEqual, 0)
So(qFileStatus.HeadDataItemOffset, ShouldEqual, dataLen)
So(len(qFileStatus.IndexFileList), ShouldEqual, 1)
fileInfo := qFileStatus.IndexFileList[0]
So(fileInfo.CanGC, ShouldBeFalse)
So(fileInfo.FileIndex, ShouldEqual, 0)
So(len(qFileStatus.DataFileList), ShouldEqual, 1)
fileInfo = qFileStatus.IndexFileList[0]
So(fileInfo.CanGC, ShouldBeFalse)
So(fileInfo.FileIndex, ShouldEqual, 0)
So(qFileStatus.MetaFileInfo, ShouldNotBeNil)
So(qFileStatus.FrontFileInfo, ShouldNotBeNil)
// after gc
queue.Enqueue(data)
queue.Dequeue()
queue.Gc()
qFileStatus = queue.Status()
So(qFileStatus.TailIndex, ShouldEqual, 1)
})
}
// TestFileQueue_PeekPagination
func TestFileQueue_PeekPagination(t *testing.T) {
Convey("Test PeekPagination", t, func() {
path := Tempfile()
clearFiles(path, "testqueue")
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
if err != nil {
t.Error(err)
}
defer queue.Close()
defer clearFiles(path, "testqueue")
Convey("test PeekPagination on empty queue", func() {
data, indexs, err := queue.PeekPagination(0, 0)
So(err, ShouldBeNil)
So(data, ShouldBeEmpty)
So(indexs, ShouldBeEmpty)
data, indexs, err = queue.PeekPagination(1, 1)
So(err, ShouldBeNil)
So(data, ShouldBeEmpty)
So(indexs, ShouldBeEmpty)
})
Convey("test PeekPagination on items small than pagesize", func() {
for i := 0; i < 5; i++ { // add value
_, err := queue.Enqueue([]byte("hello matthew " + strconv.Itoa(i)))
So(err, ShouldBeNil)
}
data, indexs, err := queue.PeekPagination(0, 0)
So(err, ShouldBeNil)
So(len(data), ShouldEqual, 5)
So(string(data[4]), ShouldEqual, "hello matthew 4")
So(len(indexs), ShouldEqual, 5)
data, indexs, err = queue.PeekPagination(1, 10)
So(err, ShouldBeNil)
So(len(data), ShouldEqual, 5)
So(string(data[4]), ShouldEqual, "hello matthew 4")
So(len(indexs), ShouldEqual, 5)
data, indexs, err = queue.PeekPagination(2, 10) // large paing
So(err, ShouldBeNil)
So(data, ShouldBeEmpty)
So(indexs, ShouldBeEmpty)
data, indexs, err = queue.PeekPagination(2, 2)
So(err, ShouldBeNil)
So(len(data), ShouldEqual, 2)
So(string(data[1]), ShouldEqual, "hello matthew 3")
So(len(indexs), ShouldEqual, 2)
})
})
}
func TestMultiGoroutinesEnqueueDequeue(t *testing.T) {
path := Tempfile()
clearFiles(path, "testqueue")
defer clearFiles(path, "testqueue")
enqueueResult := make(chan int, 10)
dequeueResult := make(chan int, 10)
Convey("TestMultiGoroutinesEnqueueDequeue", t, func() {
var queue = new(FileQueue)
err := queue.Open(path, "testqueue", nil)
So(err, ShouldBeNil)
defer queue.Close()
syncEnqueu := func(q Queue) {
q.Enqueue([]byte{1, 2})
enqueueResult <- 0
}
for i := 0; i < 10; i++ {
go syncEnqueu(queue)
}
syncDequeu := func(q Queue) {
q.Dequeue()
dequeueResult <- 0
}
for i := 0; i < 10; i++ {
go syncDequeu(queue)
}
enqueueSize := 0
dequeueSize := 0
for {
select {
case <-enqueueResult:
enqueueSize++
case <-dequeueResult:
dequeueSize++
}
if enqueueSize == 10 && dequeueSize == 10 {
return
}
}
})
}
// tempfile returns a temporary file path.
func Tempfile() string {
return "./bin/temp"
}
func enqueue(queue Queue, content []byte, size int, t *testing.T) {
doEnqueue(queue, content, size, t)
sz := queue.Size()
So(sz, ShouldEqual, size)
}
func doEnqueue(queue Queue, content []byte, size int, t *testing.T) {
for i := 0; i < size; i++ {
idx, err := queue.Enqueue(content)
So(err, ShouldBeNil)
So(idx, ShouldEqual, i)
}
}
func dequeue(queue Queue, expectContent []byte, expectSize int, t *testing.T) {
count := 0
// enqueue 10 items
for i := 0; i < expectSize; i++ {
idx, bb, err := queue.Dequeue()
So(err, ShouldBeNil)
So(idx, ShouldNotEqual, -1)
count++
So(expectContent, ShouldResemble, bb)
}
So(count, ShouldEqual, expectSize)
}
func dequeueEmpty(queue Queue, t *testing.T) {
idx, _, err := queue.Dequeue()
So(err, ShouldBeNil)
So(idx, ShouldEqual, -1)
}
func clearFiles(path string, queueName string) {
RemoveFiles(path + "/" + queueName + "/" + DataFileName)
RemoveFiles(path + "/" + queueName + "/" + FrontFileName)
RemoveFiles(path + "/" + queueName + "/" + IndexFileName)
RemoveFiles(path + "/" + queueName + "/" + MetaFileName)
}